Abstract

Highly efficient quantum-dot-sensitized solar cell is fabricated using ca. 2-3 nm sized perovskite (CH(3)NH(3))PbI(3) nanocrystal. Spin-coating of the equimolar mixture of CH(3)NH(3)I and PbI(2) in γ-butyrolactone solution (perovskite precursor solution) leads to (CH(3)NH(3))PbI(3) quantum dots (QDs) on nanocrystalline TiO(2) surface. By electrochemical junction with iodide/iodine based redox electrolyte, perovskite QD-sensitized 3.6 μm-thick TiO(2) film shows maximum external quantum efficiency (EQE) of 78.6% at 530 nm and solar-to-electrical conversion efficiency of 6.54% at AM 1.5G 1 sun intensity (100 mW cm(-2)), which is by far the highest efficiency among the reported inorganic quantum dot sensitizers.

Keywords

Quantum dotNanocrystalPerovskite (structure)Nanocrystalline materialMaterials scienceIodideNanorodSolar cellEnergy conversion efficiencyElectrolyteSpin coatingPerovskite solar cellChemical engineeringNanotechnologyPhotochemistryOptoelectronicsInorganic chemistryElectrodeCoatingChemistryPhysical chemistry

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Publication Info

Year
2011
Type
article
Volume
3
Issue
10
Pages
4088-4088
Citations
3090
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Jeong‐Hyeok Im, Chang-Ryul Lee, Jin‐Wook Lee et al. (2011). 6.5% efficient perovskite quantum-dot-sensitized solar cell. Nanoscale , 3 (10) , 4088-4088. https://doi.org/10.1039/c1nr10867k

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DOI
10.1039/c1nr10867k